Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e9b993d90af461…

MALICIOUS

PDF

75.3 KB Created: 2021-01-18 18:22:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f55669527d0b34ad20b77acf215135d0 SHA-1: ee41b7b65a108bc83f575e910b4a8dbeb8d72d42 SHA-256: b7e9b993d90af461cd789b604315c5c9720b9f44f75e7ed183761609745d3388
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, which is also listed as an IOC. ClamAV detection and ML classification strongly indicate maliciousness, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to movie titles, suggesting a lure for potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://maypoin.ru/123?utm_term=superman+vs+batman+free+full+movie PDF link annotation
    • https://site-1247322.mozfiles.com/files/1247322/spring_boot_jasper_report_example.pdfIn PDF document text
    • https://site-1172290.mozfiles.com/files/1172290/94093636475.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366044/normal_5ffb859eb0a5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491151/normal_5fb5a2038c0c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491153/normal_5fb99e3d06947.pdfIn PDF document text
    • https://site-1168487.mozfiles.com/files/1168487/blood_diamond_full_movie_in_telugu.pdfIn PDF document text
    • https://site-1167988.mozfiles.com/files/1167988/bad_day_daniel_powter_lyrics_espanol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455198/normal_5ff51def42ad2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383804/normal_5fffea6ef1d4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415308/normal_5fcd5b6a75bb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479707/normal_600410fddbe8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_5f951286210ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384828/normal_5f94e3cb89d76.pdfIn PDF document text
    • https://site-1174961.mozfiles.com/files/1174961/phoenix_arizona_news_now.pdfIn PDF document text
    • https://site-1233233.mozfiles.com/files/1233233/cheetah_film_video_song.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/chlorpheniramine_maleate_msds_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/63510190454.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE940 5348 bytes
SHA-256: 72fedc52f6fa964d4169e9d84409c8b862bb82056e863e994769a2c1dd00de78
font_01_sfnt_off0000fb53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB53 10796 bytes
SHA-256: c154723205bdf1b0ab6a69a0924fdec828a9380d5471d7db37abf3f9a18e99d8

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